Finding the Fourth Proportional to 1,552.24, 2,139.60 and 1,425.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,552.24 : 2,139.60 = 1,425.07 : x
2. Step 2: Convert to fraction form
   1,552.24/2,139.60 = 1,425.07/x
3. Step 3: Cross multiply
   1,552.24x = 2,139.60 × 1,425.07
4. Step 4: Simplify right side
   1,552.24x = 3,049,079.77
5. Step 5: Solve for x
   x = 3,049,079.77/1,552.24
6. Step 6: Final answer
   x = 1,964.31